Foldable Packaging Container and Producing Method Thereof

ABSTRACT

A foldable packaging includes a base panel and a folding strap defining a folding line. The folding strap is arranged to fold around the peripheral edge of the base panel along the folding line thereof to form a tridimensional container. The folding strap further includes a reinforcing layer provided at said folding strap at a position above said folding line of said folding strap.

NOTICE OF COPYRIGHT

A portion of the disclosure of this patent document contains materialwhich is subject to copyright protection. The copyright owner has noobjection to any reproduction by anyone of the patent disclosure, as itappears in the United States Patent and Trademark Office patent files orrecords, but otherwise reserves all copyright rights whatsoever.

BACKGROUND OF THE PRESENT INVENTION Field of Invention

The present invention relates to packaging container, more particularlyto a foldable packaging container comprising a folding strap which ispliable enough to fold around the peripheral edge of a base panel andsturdy enough to withstand substantial weight and pressure.

Description of Related Arts

Paper-based packaging is frequently utilized in packaging industry forcontaining a wide range of consumer goods. For the nature of paper-basedmaterial, the packaging product is advantageous in relativelylightweight, inexpensive, and being easily disposed and/or recycled.Many of the packaging products are made in a flat-form for ease oftransportation and storage and can be folded to create a tridimensionalcontainer defining a housing compartment to hold a specific itemtherewithin. However, there is a number of disadvantages existing in theconventional paper-based packaging products.

Conventionally, a foldable packaging includes a base panel and a foldingstrap arranged to encircle around the peripheral edge of the base panelto form a tridimensional container having a housing compartment definedby the confines thereof to receive an item, such as a birthday cake,therewithin. In order to facilitate folding the folding strap at thebase panel along the peripheral edge thereof, the folding strap must bepliable enough to be easily bent and deformed with respective to thegeometry and size of the peripheral edge of the base panel.Contradictorily, the finished packaging container with pliable foldingstrap as the surrounding wall thereof is unable to guarantee asufficient strength to withstand substantial weight and pressure.

More specifically, in order to enhance the pliability of the foldingstrap, the thickness thereof is generally reduced resulting in adegradation of the rigidness thereof. Therefore, the folded packagingcontainer would be crushed or deformed, even if a small load is appliedat the surrounding wall (formed by the folding strap). In addition, thebase panel is generally adjoined with the folding strap merely via anadhesive layer provided therebetween. That is to say, the adhesive layeris to the mere element configuring the sole bonding connection betweenthe base panel and the folding strap to weakly prevent the base paneldetaching from the folding strap.

Further, the base panel of the conventional packaging container commonlyhas a regular shape, such as rectangular or round shape. In a specificexample as shown in FIG. 1A to FIG. 1C of the drawings, the conventionalpacking container 10P includes a rectangular-shaped base panel 11P and afolding strap 12P flapping around the peripheral edge of the base panel11P to create a tridimensional packaging cavity 10P therein forpackaging an item in rectangular shape. Such conventional structure ofthe base panel 11P and the folding strap 12P limits the shape of theconventional packaging container 10P to regular shape such as square,rectangular or round shape. In addition, even though the base panel 11Pis in a regular form, an overlap or wrinkle is occurred at some portionsof the folding strap 12P, especially at the corner portions thereof,because of an imperfect alignment between the folding strap 12P and theperipheral edge of the base panel 11P, as shown in FIG. 1. The overlapsor the wrinkles at the folding strap not only damage the overall intactappearance of the product but also increase the difficult to applyadhesive layer between the folding strap and the base panel.

Therefore, a packaging container having an irregular shape, such asheart shape having a varying curvature peripheral edge, will definitelymaximize the difficult in the alignment between the base panel and thefolding strap. However, such need is truly existed and strong in themarket. In particular, the heart-shaped packaging container is highlydesired in Valentine's Day, Thanksgiving Day and Christmas Day topackage merchandise, such as chocolate, flower, jewelry, and etc., whichrepresents love visibly and creates a romantic atmosphere effectively.In such case, the aesthetic feature of the overall appearance of thepackaging container is defiantly an issue, that even a small wrinkle oroverlap at the folding strap would ruin the whole romantic feeling givenby the exclusive appearance.

Further, after the folding strap is folded around the base panel along afolding line defined thereat, the folding strap at the bottom side ofthe base panel is totally exposed to the exterior, which not onlydamages the total aesthetic appearance, but also causes the printing orimpacting any graphic design to the external surface of the packagingcontainer difficult. It is well known that adding additional decorativeelements such as enterprise trademark, or other customized designs is anecessity in packaging industry.

Moreover, as mentioned above, the pliable folding strap is usually madeof thin paper-based material, making the folding lines difficult tomanufacture, for the reason that if the folding line is scored tooshallow, the folding strap may be waved around or even extended beyondthe folding line in the folding operation, while if the folding line isscored too deep, the whole strength of the folding strap is furtherdetracted, such that the folding strap can be vulnerable to tear apartin the folding process or potentially rupture in the usage of thepackaging container.

In addition, the folding strap and the base panel are independentcomponents in conventional packaging products. In order to ensure aprecise assembly of the packaging container, an operator must cautiouslyaffix a portion of the folding strap at the base panel for establishingan initial positioning datum. As such, the rest of the folding strapmust be precisely attached to the peripheral edge of the base panelprecisely along the folding line thereof. However, it is not easy toachieve a precise positioning datum in a short period time even for askilled operator, for the reason that only a small offset at the initialpositioning datum would result in a big deviation between the idealfolding line and the actual formed folding line. Therefore, afterattaching the folding strap at the base panel to form the positioningdatum, the operator commonly would slightly adjust the folding strap forachieving a precise initial start by long-years of experience. That isto say, the conventional packaging is not convenient for the operator toassembly in use, which is time-consuming and depends on the skill levelof the operator.

SUMMARY OF THE PRESENT INVENTION

The invention is advantageous in that it provides a paper-based foldablepackaging container and producing method thereof, wherein the foldingstrap of the packaging container is pliable enough to fold along theperipheral edge of the base panel and sturdy enough to withstand asubstantial weight and pressure at the same time.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein a reinforcinglayer is attached to the folding strap at a position above the foldingline of the folding strap to strengthen the folding strap, while notaffecting the foldability thereof.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein the lower edgeof the reinforcing layer is overlapped with the folding line, such thatthe reinforcing layer provides another folding limit line to aid thefolding line of the folding strap to align with the peripheral edge ofthe base panel in the assembling process.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein the foldingline can be slightly shallow formed along the folding strap to ensure asufficient strength thereof, while a precise alignment between thefolding line and the peripheral edge of the base panel is secured by thereinforcing layer. In other words, the folding line in the presentinvention is easier to manufacture because of the reinforcing layer.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein the foldingstrap further comprises a self-adjusting arrangement provided at aportion of the folding strap below the folding line to fittedly adjustthe bending manner of the folding strap with respect to the curvature ofthe peripheral edge of the base panel so as to fittedly fold the foldingstrap at the peripheral edge of the base panel.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein the foldingstrap of the present invention is able to fit with irregular-shaped basepanel, such as a heart-shaped base panel having a peripheral edge withvarying curvature.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein a portion ofthe folding strap is pre-affixed at a predetermined position of the basepanel, so as to provide an initial precise positioning datum for guidinga precise alignment between the folding line of the folding strap andthe peripheral edge of the base panel.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein thepaper-based foldable packaging container of the present invention isconvenient and easy to produce in a precise and quick manner.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein thepaper-based foldable packaging container further comprises a cover paneloverlappedly provided at the bottom side of the base panel forconcealing the folding portions of the folding strap below the foldingline, such that the overall aesthetic appearance of the packagingcontainer is intact and enhanced.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein the coverpanel is attached to the bottom side of the base panel for enhancing thebonding connection between the folding strap and the base panel toprevent potential rupture or detachment.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein an additionaldecorative element, such as an enterprise logo or other customizeddesigns, can be easily impacted at the reactively intact exteriorsurface of the packaging container.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein two end flapsof the folding strap is overlapped with each other to form aninterlocked mechanism for preventing the folding strap to flap away fromthe peripheral edge due to the rebounding force provided by the bentfolding strap in the assembly process.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein thepaper-based foldable packaging container before folding to form atridimensional container is in flat layer form with a compact size forconvenient shipment and storage, and that it is processed and folded inshape to create a three-dimensional packaging container having apackaging cavity therein for packaging a specific item when in usage.

Another advantage of the invention is to provide a paper-based foldablepackaging container and producing method thereof, wherein no expensiveor complicate structure is required to employ in the present invention.Therefore, the present invention successfully provides an economic andefficient solution for providing a foldable packaging container withbetter performance.

Additional advantages and features of the invention will become apparentfrom the description which follows, and may be realized by means of theinstrumentalities and combinations particular point out in the appendedclaims.

According to the present invention, the foregoing and other objects andadvantages are attained by a foldable packaging container whichcomprises:

a base panel having a peripheral edge and a folding line formed alongthe peripheral edge; and

a folding strap, having at least a portion adapted to be pre-connectedwith the peripheral edge of the base panel, being arranged to foldaround the peripheral edge of the base panel along the folding lineformed at the folding strap to form a tridimensional packaging containerat an assembly position, wherein the tridimensional packaging containercomprises a base portion formed by the base panel and a surrounding wallextended upwardly from the base portion, wherein the surrounding wall isformed by the folding strap and the folding strap further comprises areinforcing layer provided at a position above the folding line of thefolding strap.

In one embodiment of the present invention, a lower edge of thereinforcing layer is substantially overlapped with the folding line.

In one embodiment of the present invention, the folding strap isintegrally coupled at a portion of the base panel for providing aninitial positioning datum to guide the folding strap to fittedly foldaround the peripheral edge of the base panel along the folding linethereof.

In one embodiment of the present invention, the base panel is in heartshape, wherein a mid-portion of the folding strap is integrally affixedat a lower convex vertex portion of the heart-shaped base panel and thefolding strap is sidewardly and integrally extending from the lowerconvex vertex portion in a substantially symmetrical manner.

In one embodiment of the present invention, two end flaps of the foldingstrap, defined at the two end portions thereof, is overlappedly witheach other to form an interlocked mechanism.

In one embodiment of the present invention, the two end flaps of thefolding strap are overlapped with each other at a position at an upperconcave vertex portion of the heart-shaped base panel.

In one embodiment of the present invention, the folding strap furthercomprises a self-adjusting arrangement formed at a portion of thefolding strap below the folding line of the folding strap for adjustingthe bending manner of the folding strap with respect to a curvature ofthe peripheral edge of the base panel so as to fittedly fold the foldingstrap around the peripheral edge along the curvature thereof.

In one embodiment of the present invention, the self-adjustingarrangement comprises a plurality of the v-shaped notches indentlyformed at a portion below the folding line of the folding strap in aparallel manner.

In one embodiment of the present invention, each of the v-shaped notcheshas a vertex point and two side edge outwardly and inclinedly extendedfrom the vertex point to define an opening therebetween, wherein a sizeof the opening is adjustably minimized with respect to the curvature ofthe peripheral edge of the base panel.

In one embodiment of the present invention, a distribution of thenotches is corresponded to the varying curvature of peripheral edge ofthe base panel.

In one embodiment of the present invention, an angle of the opening ofthe notch is ranged from 15° to 135°.

In one embodiment of the present invention, the two side edges of eachnotch are substantially adjacent with each other at the assemblyposition.

In one embodiment of the present invention, the foldable packagingcontainer further comprises a cover panel overlappedly coupled at abottom side of the base panel.

In one embodiment of the present invention, a double-sided adhesivelayer is formed at a portion below the folding line of the folding strapfor bonding the folding strap at base panel and the cover panel at thebase panel.

According to another aspect of the present invention, the presentinvention provides a foldable packaging container comprising:

a base panel; and

a folding strap integrally and sidewardly extended from a portion of thebase panel for providing an initial positioning datum to guide analignment between the folding strap and the base panel, wherein at anassembly position, the folding strap is capable of fittedly foldingaround a peripheral edge of the base panel along a folding line definedalong the folding strap to form a tridimensional packaging containerhaving a base portion formed by the base panel and a surrounding wallformed by the folding strap and extended upwardly from the base portion.

According to another aspect of the present invention, the presentinvention provides a foldable packaging container comprising:

a base panel; and

a folding strap integrally and sidewardly extended from a portion of thebase panel for providing an initial positioning datum to guide analignment between the folding strap and the base panel, wherein thefolding strap further comprises a self-adjusting arrangement formed at aportion of the folding strap below the folding line of the folding strapfor adjusting a bending manner of the folding strap with respect to acurvature of a peripheral edge of the base panel, wherein at an assemblyposition, the folding strap is capable of fittedly folding around theperipheral edge of the base panel along the folding line to form atridimensional packaging container having a base portion formed by thebase panel and a surrounding wall formed by the folding strap andextended upwardly from the base portion.

According another aspect of the present invention, the present inventionfurther provides a producing method of a foldable packaging container,comprising the steps of:

configuring a base panel in an irregular shape, such as heart shape;

configuring a folding strap; and

integrally affixing a portion of the folding strap at a peripheral edgeof the base panel.

According another aspect of the present invention, the producing methodof the present invention further comprises the steps of:

establishing an initial positioning datum by integrally affixing aportion of said folding strap at the base panel;

fittedly folding the folding strap around the base panel at theperipheral edge thereof; and

retaining the folding strap at the base panel in position.

Still further objects and advantages will become apparent from aconsideration of the ensuing description and drawings.

These and other objectives, features, and advantages of the presentinvention will become apparent from the following detailed description,the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic view of a conventional foldable packagingcontainer.

FIG. 1B is a perspective view of the above conventional foldablepackaging container after it is folded and assembled to form aconventional tridimensional packaging container with regular shape.

FIG. 1C is another perspective view of the conventional foldablepackaging container after it is folded and assembled.

FIG. 2 is a perspective view of a foldable packaging container accordingto a preferred embodiment of the present invention.

FIG. 3 is a front perspective view of the foldable packaging containerafter it is folded and assembled according to the above preferredembodiment of the present invention.

FIG. 4 is a rear perspective view of the foldable packaging containerafter it is folded and assembled according to the above preferredembodiment of the present invention.

FIG. 5 is an exploded view of the foldable packaging container accordingto the above preferred embodiment of the present invention.

FIG. 6 is a schematic view illustrating the adjusting notches of theself-adjusting arrangement according to the above preferred embodimentof the present invention.

FIG. 7 is a schematic view illustrating the distribution of theadjusting notches at the folding strap with respect to the varyingcurvature of the peripheral edge of the base panel according to theabove preferred embodiment of the present invention.

FIG. 8 is a perspective view with a partial magnification view of theinterlocked mechanism formed by the two end flaps of the folding strapaccording to the above preferred embodiment of the present invention.

FIG. 9 is a perspective view of the foldable packaging container with acover panel according to the above preferred embodiment of the presentinvention.

FIG. 10 is a perspective view of the foldable packaging container,illustrating impacting a decorative element at the foldable packagingcontainer, according to the above preferred embodiment of the presentinvention.

FIG. 11 is an exploded view of the cover and the container of thefoldable packaging container according to the above preferred embodimentof the present invention.

FIG. 12 is a perspective view of the foldable packaging container,illustrating the container being covered by the cover, according to theabove preferred embodiment of the present invention.

FIGS. 13 to 16 are schematic views illustrating producing steps offorming the folding strap according to the above preferred embodiment ofthe present invention.

FIG. 17 is a perspective view illustrating the base panel and thefolding strap of the foldable packaging container before foldingaccording to the above preferred embodiment of the present invention.

FIG. 18 is a rear schematic view illustrating an assembling step ofattaching the folding strap around the peripheral edge of the base panelof the foldable packaging container according to the above preferredembodiment of the present invention.

FIG. 19 is a perspective view illustrating the interior of the containerof the foldable packaging container according to the above preferredembodiment of the present invention.

FIG. 20 is an exploded perspective view illustrating the bottomstructure of the container of the foldable packaging container accordingto the above preferred embodiment of the present invention.

FIG. 21 is an exploded perspective view illustrating the cover, thecontainer and the item being received in the packaging cavity of thecontainer of the foldable packaging container according to the abovepreferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description is disclosed to enable any person skilled inthe art to make and use the present invention. Preferred embodiments areprovided in the following description only as examples and modificationswill be apparent to those skilled in the art. The general principlesdefined in the following description would be applied to otherembodiments, alternatives, modifications, equivalents, and applicationswithout departing from the spirit and scope of the present invention.

Referring to FIG. 2 to FIG. 4 of the drawings, a foldable packagingcontainer 10 according to a preferred embodiment is illustrated, whereinthe foldable packaging container 10 is produced in a flat layer formbefore folding for the ease of shipment and storage, and is constructedto be folded to form a tridimensional container 10A having a packagingcavity 13A therein to contain a specific item for packaging purpose.

As shown in the FIG. 2 and FIG. 3 of drawings, the foldable packagingcontainer 10 comprises a base panel 11 and a folding strap 12, whereinat an assembly position, the folding strap 12 is arranged to be fittedlyfolded around a peripheral edge 110 of the base panel 11 to form thetridimensional container 10A.

Further, as shown in FIG. 3, the tridimensional container 10A foldedfrom the foldable packaging container 10 comprises a base portion 11Aformed by the base panel 11, a surrounding wall 12A formed from thefolding strap 12 and upwardly extended from the base portion 11A at theperipheral edge 110 of the base panel 11 to define the packaging cavity13A therewithin, wherein a specific item can be received in thepackaging cavity 13A for fulfilling the packaging purpose. Accordingly,the folding strap 12 is folded along the peripheral edge 110 of the basepanel 11 in such a manner that a portion of the folding strap 12 isflapped to attach to a bottom side of the base panel 11 for retainingthe folding strap 12 at the base panel 11, while the left portion of thefolding strap 12 is perpendicularly and upwardly extended from the basepanel 11 to form the surrounding wall 12A of the container 10A thereby.

As mentioned above, good pliability and sufficient rigidity of thefolding strap 12 (surrounding wall 12A of the container 10A) arecontradictory technical features that are hard to meet at the same time.Commonly, in order to enhance the pliability of the folding strap 12,its thickness must be reduced, resulting in a degradation of therigidity thereof, such that the conventional packaging container 10P isunable to withstand a substantial weight and pressure. On the contrary,a folding strap 12P with sufficient thickness could guarantee a rigidityto withstand the applied load at the conventional packaging container10P, but the foldability of the folding strap 12P is significantlyminimized because of the decreased pliability thereof.

In order to overcome such contradictory technique features in the priorart, the foldable packaging container 10 of the present inventionprovides a reinforcing layer 123 attached to the folding strap 12 toenhance the rigidity of the folding strap 12 thereby while not affectingthe foldability thereof simultaneously. In particular, as shown in FIG.2 to FIG. 4 of the drawings, a folding line 120 is formed along thefolding strap 12 for guiding the folding operation of the folding strap12 around the base panel 11, wherein at the assembly position, a portionof the folding strap below the folding line 121 is folded to attach tothe bottom side of the base panel 11 so as to retain the left portion ofthe folding strap above the folding line 122 in position, as thesurrounding wall 12A of the container 10A. In other words, the portionof the folding strap 12 below folding line 121 of the folding strap 12substantially determines the foldability of the folding strap 12, suchthat it would be practical to keep the folding strap 12 flexible at theportion of the folding strap below the folding line 121 for maintaininga good foldability while increasing the thickness of the portion of thefolding strap 12 above the folding line 122 to acquire a sufficientstrength of the surrounding wall 12A of the container 10A at the sametime.

As shown in the FIG. 5 of the drawings, the reinforcing layer 123 isoverlappedly provided at the folding strap 12 at a position that a loweredge 1231 of the reinforcing layer 123 substantially overlaps with thefolding line 120 and an upper edge thereof 1232 is extended upwardlyfrom the lower edge 1231, such that the thickness of the portion of thefolding strap 12 above the folding line 122 is increased while thethickness of the portion of the folding strap 12 below the folding line121 is remained the same. Therefore, the portion of the folding strap 12above the folding line 122 is strengthened to prevent the container 10Afrom being crushed or ruptured easily. At the same time, the pliabilityof the portion of the folding strap 12 below the folding line 121 is notaffected, such that the portion of the folding strap 12 below thefolding line 121 can be easily bent with respect to the folding line 120to encircle and surround the peripheral edge 110 of the base panel 11 atthe assembly position.

It is worth mentioning that the lower edge 1231 of the reinforcing layer123 is substantially overlapped with the folding line 120 in such amanner that the reinforcing layer 123 provides another folding limitline to limit the folding strap 12 to fold in line with the folding line120.

It is well known that the folding line 120 is always an issue in theproduction of the packaging materials, for the reason that if thefolding line 120 is formed too shallow, the actual folding line 120 maybe waved around or even extended beyond the designed folding line 120 inthe folding practice, and that if the folding line 120 is formed toodeep, the whole structure of the folding strap 12 is further detracted,such that the folding strap 12 may be vulnerable to tear apart in thefolding process or potentially rupture in the usage of the container10A. In the present invention, since the reinforcing layer 123 functionsanother folding limit line for the folding strap 12 to comply with inthe folding process, the folding line 120 formed at the folding strap 12can be slightly shallowed to maintain a relatively strong structure soas to prevent potential rupture or tearing apart. Those who skilled inthe art would easily understand that, an addition functional layer mightbe added into the folding strap 12, i.e. a liquid-resistant layer. Insuch cases, the worry of breaking the structure of the addition functionlayer during forming the folding line 120 at the folding strap 12 issubstantially minimized because of the shallowed folding line 120.

Further, as shown in the FIG. 2, the base panel 11 of the presentinvention can be made in irregular shape other than in a regular shapeform, such as rectangular or round shape as in the prior art. Inparticular, the base panel 11 in this preferred embodiment is formed,such as by a die cut technique, in a substantially heart shape, whereinthe heart-shaped base panel 11 has a lower convex vertex 111, an upperconcave vertex 112 and two side edges 113, 114 extended between thelower convex vertex 111 and upper concave vertex 112 to define aheat-shape area. Accordingly, the geometry feature of the peripheraledge 110 of base panel 11 (formed by the two side edges 113, 114) inthis preferred embodiment is complicated with varying curvature atdifferent portions of the peripheral edge 110, and the difficult ofaligning and folding of the folding strap along the such peripheral edgeis overcome by the innovative configuration and structure of the foldingstrap 12 with respect to the base panel 11 of the present invention.According to the preferred embodiment of the present invention, thefolding strap 12 is able to be alignedly folded along the peripheraledge 110 of the base panel 11 in a rapid and easy manner.

In particular, in order to fittedly fold the folding strap 12 to alignwith the peripheral edge 110 of the base panel 11 to prevent anyoverlaps or wrinkles, a self-adjusting arrangement 124 is employed inthe present invention, wherein the self-adjusting arrangement 124 isprovided at the portion of the folding strap below the folding line 121to fittedly adjust the bending manner of the folding strap 12 withrespective to the geometry feature of the peripheral edge 110 of thebase panel 11 so as to fittedly fold the folding strap 12 at the basepanel 11 along the peripheral edge 110 thereof.

More specifically, as shown in the FIG. 6, the self-adjustingarrangement 124 further comprises a plurality of adjusting notches 1240indently formed at the portion of the folding strap 12 below the foldingline 121 in a substantially parallel manner. When the folding strap 12is aligned folded around the peripheral of the base panel 11 in thefolding process, the shapes of the adjusting notches 1240 are changedwith respective to the curvature of the peripheral edge 110 of the basepanel 11, so as to fittedly adjust the bending manner of the foldingstrap 12 to align with the curvature of the peripheral edge 110 of thebase panel 11.

In particular, the adjusting notches 1240, according to the preferredembodiment, is formed in a V shape, wherein each of the V-shapedadjusting notches 1240 has a vertex point 1241 and two side edges 1242,1243 outwardly extended from the vertex point 1241 to define an opening1244 therebetween, wherein the angles and sizes of the openings 1244 areadjustably minimized with respective to the curvature of the peripheraledge 110 of the base panel 11, as the folding strap 12 is circlingaround the base panel 11, as shown in FIG. 6. In other words, thecomplicated varying curvature of the peripheral edge 110 of the basepanel 11 is fittedly matched by the varying self-changes of the openings1244 of the adjusting notches 1240 in this preferred embodiment of thepresent invention.

Those who skilled in the art would easily understand that in order toavoid any overlap or wrinkles occurring at the folding strap 12, the twoside edges 1242, 1243 of each of the adjusting notches 1240 cannot beoverlapped with each other in the folding process.

Accordingly, since the curvature of the peripheral edge 110 of basepanel 11 is varied at different portions, it is important to well-designthe distribution of the adjusting notches 1240 at the folding strap 12with respective to the curvature distribution of the peripheral edge 110of the base panel 11, as well as the angles of the openings 1244 of theadjusting notches 1240 at different portions of the folding strap 12, inorder to prevent the two side edges 1242, 1243 overlapped with oneanother in the folding process.

According to the preferred embodiment of the present invention, the basepanel 11 is embodied in a substantial heart shape, wherein the curvatureof peripheral edge 110 at the side edge 113, 114 thereof is graduallyincreased from the lower convex vertex 111 to the upper concave vertex112. Therefore, in this preferred embodiment, it is practical to definethe peripheral edge 110 of the base panel 11 into four regions,including a small-curvatured region 115 defined from the lower convexvertex 111 to a mid-portion of the left side edge 113 of the base panel11, a large-curvatured region 116 extended from the mid-portion of theleft side edge 113 to the upper concave vertex 112 and anothersmall-curvatured region 115 and large-curvatured region 116 defined onthe opposite right side 114, as shown in FIG. 7 of the drawings.

Accordingly, the adjusting notches 1240 corresponding to thelarge-curvatured regions 116 of the peripheral edge 110 of the basepanel 11, when folding the folding strap 12 around the base panel 11, ispreferably arranged in a high-density distribution. In other words, moreadjusting notches 1240 should be parallelly formed at the correspondingportion of the folding strap 12 to further soften the structure of thefolding strap 12 thereby, as to well-fit with the large-curvaturedregions 116 of the base panel 11.

On the contrary, the adjusting notches 1240 corresponding to thesmall-curvatured regions 115 of the peripheral edge 110 of the basepanel 11, when folding the folding strap 12 around the base panel 11, ispreferably arranged in a low-density distribution. In other words, feweradjusting notches 1240 should be parallelly formed at the correspondingportions of the folding strap 12 with larger intervals between each twoadjacent adjusting notches 1240 to well-adapt to the small-curvaturedregions 115 of the base panel 11.

It is important to mention that since the adjusting notches 1240corresponding to the large-curvatured regions 116 of the base panel 11would be deformed more intensively than the notches 1240 correspondingto the small-curvatured regions 115 of the base panel 11, such that theangels of the openings 1244 of the adjusting notches 1240 correspondingto the large-curvatured regions 116 would be decreased more than thoseof the adjusting notches 1240 corresponding to the small-curvaturedregions 115. Therefore, to the angels of the adjusting notches 1240corresponding to the small-curvatured regions 115 are preferably smallerthan those of the adjusting notches 1240 corresponding to thelarge-curvatured regions 116, such that the two side edges 1242, 1243 ofeach of the adjusting notches 1240, both corresponding to thelarge-curvatured regions 116 and corresponding to the small-curvaturedregions 115, would be located adjacently with each other, while onoverlaps occurs at the same time.

It is important to mention that the angels of the adjusting notches 1240are varied at different regions of the folding strap 12 for fittedlyalign with the varying curvatures of the peripheral edge 110 of the basepanel 11, wherein the angels of the adjusting notches 1240 in thispreferred embodiment are ranged from 15° to 135°.

Those who skilled in the art would easily understand that the base panel11 may be further defined into more regions, such as six regions oreight regions, according to the curvature distribution of the peripheraledge 110 of the base panel 11, which is not a limit in the presentinvention. Moreover, the base panel 11 may be embodied in any othershapes, such as peach shape, or crescent shape, in other embodiments ofthe present invention. Accordingly, the distribution of the adjustingnotches 1240 at the folding strap 12 is different and should bere-designed to fit with the curvature variation of the peripheral edge110 of the differently shaped base panel 11.

Further, an adhesive layer 125 is provided between the folding strap 12and the base panel 11 for retaining the folding strap 12 at the basepanel 11 around the peripheral edge 110 thereof in position, so as toform the surrounding wall 12A of the container 10A thereby. Inparticular, the adhesive layer 125 is provided at the portion of thefolding strap 12 below the folding line 121, wherein when the foldingstrap 12 is folded around the base panel 11 along the folding line 120,the portion of the folding strap 12 below the folding line 121 isflapped inwardly and extended to contact with a bottom face of the basepanel 11, such that the portion of the folding strap 12 below thefolding line 121 is stuck to the base panel 11 at the bottom sidethereof.

According to the preferred embodiment, the adhesive layer 125 isembodied as a double-sided adhesive element provided at the portion ofthe folding strap 12 below the folding line 121. Prior to the assemblyprocess, one face of the double-sided adhesive layer 125 is covered by acover layer, and the cover layer is ripped off to expose the adhesivelayer 125 so as to adhere the folding strap 12 to the bottom side of thebase panel 11 thereby in the assembly process. It worth mentioning thatthe adjusting notches 1240 of the self-adjusting arrangement 124 areformed prior to attaching the adhesive layer 125 at the portion of thefolding strap 12 below the folding line 121 for keeping the intactstructure of the adhesive layer 125.

Those who skilled in the art would easily understand that the adhesivelayer 125 can be applied and formed at any time point during theassembly process. For example, in other alternative modes of thepreferred embodiment of the present invention, the adhesive layer 125can be formed by applying a gluing material between the folding strap 12and the base panel 11, wherein such operation of applying the gluingmaterial can be performed at any time during the assembly process, i.e.prior to the folding operation of the folding strap 12 or after thefolding operation of the folding strap 12, which should not beconsidered as a limitation in the present invention.

As shown in the FIG. 2 and FIG. 3 of the drawings, in order to furtherfacilitate the folding operation of the folding strap 12 around the basepanel 11, a portion of the folding strap 12 is integrally affixed at apredetermined position of the base panel 11 for creating an initialprecise positioning datum to guide a precise alignment between thefolding line 120 of the folding strap 12 and the peripheral edge 110 ofthe base panel 11.

More specifically, as mentioned above, in case that the folding strap 12and the base panel 11 are independent components, an operator mustcautiously affix a portion of the folding strap 12 at the base panel 11to establish an initial positioning datum for guiding the furtherfolding operation of the folding strap 12 around the base panel 11,which is of great importance for acquiring a precise actual folding line120 in line with the designed folding line 120. However, it is not easyto achieve a precise positioning datum in a short period time even for askilled operator, since even a small offset at the initial positioningdatum would result in a big deviation between the ideal folding line 120and the actual formed folding line.

Accordingly, in the present invention, the initial precise positioningdatum is pre-provided prior to the folding operation of the foldingstrap 12 by integrally coupling the folding strap 12 at the base panel11. In particular, a mid-portion of the folding strap 126 is integrallycoupled at the lower convex vertex portion 111 of the heart-shaped basepanel 11, such that the folding strap 12 is integrally and sidewardlyextended from the lower convex vertex portion 111 of the base panel 11in a substantially symmetrical manner. Therefore, the operator couldcomplete the folding operation of the folding strap 12 in a short periodof time while enabling the folding strap 12 to have a precise alignment.

It worth mentioning that the length of the folding strap 12 is slightlygreater than that of the peripheral edge 110 of the base panel 11, suchthat when the folding strap 12 encircles around the base panel 11, twoend flaps 1271, 1272 of the folding strap 12, defining at the two endportions thereof, are partially overlapped with each other to form aninterlocked mechanism 127 for enhancing the bonding connection betweenthe folding strap 12 and the base panel 11, as shown in FIG. 8 of thedrawings.

More specifically, as the operator guide the two end flaps 1271, 1272 toencircle the folding strap 12 around the peripheral edge 110 of the basepanel 11, the folding strap 12 is potentially to flap away from theperipheral edge 110 due to the rebounding force provided by the bentfolding strap 12, prior to bonding the folding strap 12 at the bottomside of the base panel 11 via the adhesive layer 125. In this preferredembodiment, the interlocked mechanism 127 formed by the two end flaps1271, 1272 of the folding strap 12 remains the folding strap 12 inposition for preventing any flapping backward movement thereof prior tothe bonding operation of the adhesive layer 125.

Preferably, in this preferred embodiment, the two end flaps 1271, 1272of the folding strap 12 are overlapped at a position adjacent to upperconcave vertex portion 112 of the heart-shaped base panel 11 for thereason that the upper concave vertex portion 112 of the heart-shapednaturally provides a location for the folding strap 12 to ride on andform the interlocking structure 127 thereat conveniently. Moreover, asmentioned above, the folding strap 12 is integrally and sidewardlyextended from the lower convex vertex portion 111 of the base panel 11in a substantially symmetrical manner, such that the main load of thefolding strap 12 is centralizedly distributed at the lower convex vertexportion 111 and upper concave vertex portion 112, while the connectionsbetween the folding strap 12 and the base panel 11 at the at the lowerconvex vertex portion 111 and upper concave vertex portion 112 aresubstantially strengthened by the interlocked mechanism 127 at upperconcave vertex portion 112 and the integrally affixing arrangement atthe lower convex vertex portion 111 in the present invention. Therefore,the container 10A formed from the foldable packaging container 10 isable to withstand a substantial weight and pressure.

Moreover, in the present invention, an addition adhesion medium 1273 isprovided between the two end flaps 1271, 1272 of the folding strap 12 toform the interlocked mechanism 127 thereby. In particular, theadditional adhesion medium 1273 might as well embody as a double-sidedadhesive element provided at an inner side of one of the two end flaps1271, 1272 of the folding strap 12, wherein prior to the foldingoperation, one face of the double-sided adhesive layer 125 is covered bya cover layer, and the cover layer is ripped off to expose the adhesivelayer 125 for bonding the two end flaps 1271, 1272 together so as toform the interlocked mechanism 127 thereby. Those who skilled in the artwould easily understand that the interlocked mechanism 127 can beembodied in any other form such as hook-and-loop fasteners or the likeas long as the interlocked mechanism 127 is able to bond the two endflaps 1271, 1272 of the folding strap 12 together.

Further, as shown in the FIG. 9, the foldable packaging container 10 ofthe present invention further comprises a cover panel 13, wherein thecover panel 13 is arranged to overlap at the bottom side of the basepanel 11 for covering and concealing the folding portions of the foldingstrap 12 at the bottom side of the base panel 11, so as to enhance theoverall aesthetic appearance of the packaging container 10A thereby.

More specifically, the cover panel 13 overlappedly provided at thebottom side of the base panel 11 has a substantially same shape and sizewith the base panel 11, such that the folding portions of the foldingstrap 12 exposed to the exterior are substantially covered by the coverpanel 13. As such, the overall exterior surface of the container 10A isintact and free from any exterior structural features, facilitatingimpacting additional decorative elements 130, such as an enterprise logoor other customized designs, thereat conveniently, which is shown inFIG. 10.

It is worth mentioning that the cover panel 13 attached to the bottomside of the base panel 11 further enhances the bonding connectionbetween the folding strap 12 and the base panel 11 to allow thecontainer 10A to withstand a relatively larger load without rupture ordetachment.

Further, as shown in FIG. 11 and FIG. 12 of the drawings, the foldablepackaging container 10 of the present invention may further comprise acover 14 such as a covering lid, wherein the cover 14 is supported at anupper portion of the surrounding wall 12A of the container 10A toenclose the item received within the storage cavity. Likewise, thefoldable packaging container 10 may further comprises an inner member15, as shown in FIG. 21, such as a platform or holding device forcontaining or holding the item to be received in the packaging cavity13A of the container 10A.

Referring to FIG. 13 to FIG. 17 of the drawings, a producing method ofthe foldable packaging container 10 is illustrated, wherein theproducing method comprises the steps of:

(a) configuring a base panel 11 embodied in a heart shape;

(b) configuring a folding strap 12; and

(c) integrally affixing at least a portion of the folding strap 12 at apredetermined position of the base panel 11;

The configuring step (b) of the folding strap 12 further comprises thesteps of:

(b1) forming a folding line 120 along the folding strap 12;

(b2) overlappedly attaching a reinforcing layer 123 to the folding strap12 at a position that a lower edge of the reinforcing layer 123substantially overlaps with the folding line 120 and an upper edge ofthe reinforcing layer 123 is extended upwardly from the lower edge alongthe folding strap 12; and

(b3) configuring a self-adjusting arrangement 124 at a portion of thefolding strap below the folding line 121.

According to the preferred embodiment, the self-adjusting arrangement124 further has a plurality of adjusting notches 1240 indently formed atthe portion of the folding strap 12 below the folding line 121 in asubstantially parallel manner, wherein the shapes of the adjustingnotches 1240 are preferred to be formed with respect to the curvature ofthe peripheral edge 110 of the base panel 11, so as to fittedly adjustthe bending manner of the folding strap 12 to align with the curvatureof the peripheral edge 110 of the base panel 11.

Moreover, the distribution of the adjusting notches 1240 at the foldingstrap 12 and the angles of the openings 1244 of the adjusting notches1240 at different portions of the folding strap 12 are corresponding tothe curvature distribution of the peripheral edge 110 of the base panel11, as to prevent the two side edges 113, 114 overlapped with oneanother in the folding process.

Accordingly, the step (b3) of configuring the self-adjusting arrangement124 further comprises the steps of:

(b31) indently forming a plurality of adjusting notches 1240 at theportion of the folding strap below the folding line 121 in asubstantially parallel manner; and

(b32) distributing the adjusting notches 1240 at the folding strap 12corresponding to the curvature of the peripheral edge 110 of the basepanel 11.

Further, in the step (c) of integrally affixing a portion of the foldingstrap 12 at a predetermined position of the base panel 11, a mid-portionof the folding strap 126 is integrally coupled at the lower convexvertex portion 111 of the heart-shaped base panel 11, such that thefolding strap 12 is integrally and sidewardly extended from the lowerconvex vertex portion 111 of the base panel 11 in a substantiallysymmetrical manner.

Accordingly, the step (c) of integrally affixing a portion of thefolding strap 12 at a predetermined position of the base panel 11,further comprises the steps of:

(c1) integrally affixing a mid-portion of the folding strap 126 at alower convex vertex portion 111 of the heart-shaped base panel 11; and

(c2) extending the folding strap 12 sidewardly from the lower convexvertex portion 111 of the base panel 11 in a substantially symmetricalmanner.

Further, according to the preferred embodiment of the present invention,an adhesive layer 125 is provided between the folding strap 12 and thebase panel 11 for retaining the folding strap 12 at the base panel 11around the peripheral edge 110 thereof in position, so as to form thesurrounding wall 12A of the container 10A.

Accordingly, the adhesive layer 125 can be embodied as a double-sidedadhesive element provided at the portion of the folding strap 12 belowthe folding line 121, wherein prior to the assembly process, one face ofthe double-sided adhesive layer 125 is covered by a cover layer, and thecover layer is ripped off to expose the adhesive layer 125 for adheringthe folding strap 12 to the bottom side of the base panel 11 thereby atthe assembly process. It is worth mentioning that the adjusting notches1240 of the self-adjusting arrangement 124 are formed prior to attachingthe adhesive layer 125 at the portion of the folding strap below thefolding line 121 for keeping the intact structure of the adhesive layer125.

Accordingly, the producing method further comprises a step of:

forming a double-sided adhesive layer 125 between the folding strap 12and the base panel 11 after the step (b2) of configuring theself-adjusting arrangement 124.

It is important to mention that the foldable packaging container 10 canbe produced in a single location or different locations. For example,the base panel 11 may be made at a first location (e.g. cuttingfacility) and then transported to a second location, where the foldingstrap 12 is made and prepared for being adjoined with the base panel 11.

Referring to FIG. 18 to FIG. 21 of the drawing, the producing method ofthe present invention further comprises an assembly process to fold andassemble the foldable packaging container 10 to form the container 10A,wherein the assembly process comprises the steps of:

(i) establishing an initial positioning datum by integrally affixing aportion of the folding strap 12 at the base panel 11

(ii) fittedly folding the folding strap 12 around the base panel 11 atthe peripheral edge 110 thereof; and

(iii) retaining the folding strap 12 at the base panel 11 in position.

Accordingly, in the step (i) of establishing an initial positioningdatum, a mid-portion of the folding strap 126 is integrally coupled atthe lower convex vertex portion 111 of the heart-shaped base panel 11,such that the folding strap 12 is integrally and sidewardly extendedfrom the lower convex vertex portion 111 of the base panel 11 in asubstantially symmetrical manner.

Further, the step (ii) of fittedly folding the folding strap 12 aroundthe base panel 11 further comprises the steps of:

(ii-1) extending the folding strap 12 along the peripheral edge 110 ofthe base panel 11, wherein a portion of the folding strap below thefolding line 121 is folded inwardly to the bottom side of the panel andthe left portion of the folding strap 12 above the folding line 122 isperpendicularly and upwardly extended from the base panel 11;

(ii-2) self-adjusting the shape of the adjusting notch of the adjustingarrangement; and

(ii-3) fitting the bending manner of the folding strap 12 with respectto the curvature of the peripheral edge 110 of the base panel 11.

Accordingly, the step (iii) of retaining the folding strap 12 at thebase panel 11 in position, further comprises the steps of:

(iii-1) interlocking two end flaps 1271, 1272 of the folding strap 12 ata convex vertex portion of the base panel 11; and

(iii-2) configuring an adhesive layer 125 between the folding strap 12and the base panel 11 for retaining the folding strap 12 at the basepanel 11 around the peripheral edge 110 thereof in position.

It is important to mention that, in the preferred embodiment, theadhesive layer 125 can be embodied as a double-sided adhesive elementprovided at the portion of the folding strap below the folding line 121,wherein prior to the assembly process, one face of the double-sidedadhesive layer 125 is covered by a cover layer, and the cover layer isripped off to expose the adhesive layer 125 for adhering the foldingstrap 12 to the bottom side of the base panel 11 thereby at the assemblyprocess.

Accordingly, the step (iii-2) of configuring the adhesive layer 125between the folding strap 12 and the base panel 11, further comprisesthe step of:

(iii-21) exposing the adhesive layer 125 of the double-sided adhesivelayer 125; and

(iii-22) bonding the folding strap 12 at the base panel 11 around theperipheral edge 110 thereof in position.

It is worth mentioning that the producing method of the foldablepackaging container 10 of the present invention may further comprise astep (d) of providing a cover panel 13 and the assembly process furthercomprises a step (iv) of overlapping the cover panel 13 at the bottomside of the base panel 11 for concealing the folding portions of thefolding strap 12 at the bottom side of the base panel 11.

It worth mentioning that the assembly operation can be easily andprecisely performed by an operator even without sufficient experience.Therefore, the present invention successfully provides an economic andefficient solution for providing the container 10A from the foldablepackaging container 10 with better performance.

One skilled in the art will understand that the embodiment of thepresent invention as shown in the drawings and described above isexemplary only and not intended to be limiting.

It will thus be seen that the objects of the present invention have beenfully and effectively accomplished. The embodiments have been shown anddescribed for the purposes of illustrating the functional and structuralprinciples of the present invention and is subject to change withoutdeparture from such principles. Therefore, this invention includes allmodifications encompassed within the spirit and scope of the followingclaims.

What is claimed is:
 1. A foldable packaging container, comprising: abase panel having a peripheral edge; and a folding strap having afolding line defined thereat, wherein said folding strap is arranged tobe able to fold around said peripheral edge of said base panel alongsaid folding line thereof to form a tridimensional container whichcomprises a base portion formed by said base panel and a surroundingwall, formed from said folding strap, extended upwardly from said baseportion, wherein said folding strap further comprises a reinforcinglayer provided at said folding strap at a position above said foldingline of said folding strap.
 2. The foldable packaging container asrecited in claim 1, wherein a lower edge of said reinforcing layer issubstantially overlapped with said folding line to provide an additionfolding limit line thereby.
 3. The foldable packaging container asrecited in claim 2, wherein said base panel is formed in an irregularshape.
 4. The foldable packaging container as recited in claim 2,wherein a portion of said folding strap is integrally affixed at saidbase panel to provide an initial positioning datum.
 5. The foldablepackaging container as recited in claim 3, wherein a portion of saidfolding strap is integrally affixed at said base panel to provide aninitial positioning datum.
 6. The foldable packaging container asrecited in claim 5, wherein a mid-portion of said folding strap isintegrally affixed at a lower convex vertex portion of said cover paneland said folding strap is sidewardly and integrally extended from saidlower convex vertex portion in a substantially symmetrical manner. 7.The foldable packaging container as recited in claim 6, wherein two endflaps of said folding strap, defined at said two end portions thereof,is overlapped with each other to form an interlocked mechanism.
 8. Thefoldable packaging container as recited in claim 7, wherein said two endflaps of said folding strap are overlapped with each other to form saidinterlocked mechanism at a position at an upper concave vertex portionof said heart-shaped base panel.
 9. The foldable packaging container asrecited in claim 1, wherein said folding strap further comprises aself-adjusting arrangement formed at a portion of said folding strapbelow said folding line of said folding strap for adjusting said bendingmanner of said folding strap with respect to said curvature of saidperipheral edge of said base panel.
 10. The foldable packaging containeras recited in claim 9, wherein said self-adjusting arrangement comprisesa plurality of said v-shaped notches indently formed at a portion ofsaid folding strap below said folding line.
 11. The foldable packagingcontainer as recited in claim 10, wherein each of said v-shaped notcheshas a vertex point and two side edges outwardly and inclinedly extendedfrom said vertex point to define an opening therebetween, wherein a sizeof said opening of each of said adjusting notches is adjustablyminimized with respect to said curvature of said peripheral edge of saidbase panel.
 12. The foldable packaging container as recited in claim 11,wherein said notches is distributed corresponding to a varying of saidcurvature of said peripheral edge of said base panel.
 13. The foldablepackaging container as recited in claim 12, wherein said adjustingnotches, corresponding to said relative large-curvatured portions ofsaid peripheral edge of said base panel, are arranged in a relativelyhigh-density distribution, while said adjusting notches, correspondingto said relatively small-curvatured portions of said peripheral edge ofsaid base panel, are arranged in a low-density distribution.
 14. Thefoldable packaging container as recited in claim 13, wherein angels ofopenings of said adjusting notches corresponding to said relativelysmall-curvatured portions are smaller than angles of openings of saidadjusting notches corresponding to said relatively large-curvaturedportions.
 15. The foldable packaging container as recited in claim 14,wherein said angles of said openings of said adjusting notches areranged from 15° to 135°.
 16. The foldable packaging container as recitedin claim 8, wherein said folding strap further comprises aself-adjusting arrangement formed at a portion of said folding strapbelow said folding line of said folding strap for adjusting said bendingmanner of said folding strap with respect to said curvature of saidperipheral edge of said base panel.
 17. The foldable packaging containeras recited in claim 16, wherein said self-adjusting arrangementcomprises a plurality of said v-shaped notches indently formed at aportion of said folding strap below said folding line.
 18. The foldablepackaging container as recited in claim 17, wherein each of saidv-shaped notches has a vertex point and two side edges outwardly andinclinedly extended from said vertex point to define an openingtherebetween, wherein a size of said opening of each of said adjustingnotches is adjustably minimized with respectively to said curvature ofsaid peripheral edge of said base panel.
 19. The foldable packagingcontainer as recited in claim 18, wherein said notches are distributedcorresponding to a varying of said curvature of said peripheral edge ofsaid base panel.
 20. The foldable packaging container as recited inclaim 1, further comprising an adhesive layer provided between saidfolding strap and said base panel, wherein said adhesive layer isconstructed after said self-adjusting arrangement is formed.
 21. Thefoldable packaging container as recited in claim 20, wherein saidadhesive layer is a double-sided adhesive element provided at saidportion of said folding strap below said folding line.
 22. The foldablepackaging container as recited in claim 1, further comprising a coverpanel arranged to overlap at a bottom side of said base panel to coverand conceal said folding portions of said folding strap at said bottomside of said base panel.
 23. The foldable packaging container as recitedin claim 22, wherein said cover panel overlappedly provided at saidbottom side of said base panel has a substantially same shape and sizewith said base panel.
 24. The foldable packaging container as recited inclaim 1, further comprising a cover supported at an upper portion ofsaid surrounding wall of said packaging container for enclosing an itemreceived therein.
 25. A producing method of a foldable packagingcontainer comprising the steps of: configuring a base panel having aperipheral edge; and integrally affixing at least a portion of a foldingstrap at said base panel, wherein said folding strap comprises a foldingline along said folding strap, wherein said folding strap is arranged tobe able to fold around said peripheral edge of said base panel alongsaid folding line thereof to form a tridimensional container whichcomprises a base portion formed by said base panel and a surroundingwall, formed from said folding strap, extended upwardly from said baseportion, wherein said folding strap further comprises a reinforcinglayer provided at said folding strap at a position above said foldingline of said folding strap.